This repo provides an implementation of Narwhal and Tusk. The codebase has been designed to be small, efficient, and easy to benchmark and modify. It has not been designed to run in production but uses real cryptography (dalek), networking (tokio), and storage (rocksdb).
The core protocols are written in Rust, but all benchmarking scripts are written in Python and run with Fabric. To deploy and benchmark a testbed of 4 nodes on your local machine, clone the repo and install the python dependencies:
$ git clone https://github.com/facebookresearch/narwhal.git
$ cd narwhal/benchmark
$ pip install -r requirements.txt
You also need to install Clang (required by rocksdb) and tmux (which runs all nodes and clients in the background). Finally, run a local benchmark using fabric:
$ fab local
This command may take a long time the first time you run it (compiling rust code in release mode may be slow) and you can customize a number of benchmark parameters in fabfile.py. When the benchmark terminates, it displays a summary of the execution similarly to the one below.
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SUMMARY:
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+ CONFIG:
Committee size: 4 node(s)
Input rate: 50,000 tx/s
Transaction size: 512 B
Faults: 0 node(s)
Execution time: 19 s
Header size: 1,000 B
Max header delay: 100 ms
GC depth: 50 round(s)
Sync retry delay: 10,000 ms
Sync retry nodes: 3 node(s)
batch size: 500,000 B
Max batch delay: 100 ms
+ RESULTS:
Consensus TPS: 46,478 tx/s
Consensus BPS: 23,796,531 B/s
Consensus latency: 464 ms
End-to-end TPS: 46,149 tx/s
End-to-end BPS: 23,628,541 B/s
End-to-end latency: 557 ms
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This software is licensed as Apache 2.0.